October 21, 2012
Compare two diff array with same size
Question by Pranali
I have a simple application in which I want compare two arrays.
function check() {
var Array1 = value.length;
var Array2 = selected_value.length;
alert(Array1 + "," + Array2);
for (var i = 0; i < Array1; i++) {
for (var j = 0; j < Array2; j++) {
if (value[i] == selected_value[j]) {
alert("both div are same");
}
}
}
}
my arrays have 4 elements each but the if condition is not satisfied.
Answer by Starx
Here is function, with which you can compare two arrays
function arraysEqual(arr1, arr2) {
if(arr1.length !== arr2.length)
return false;
for(var i = arr1.length; i--;) {
if(arr1[i] !== arr2[i])
return false;
}
return true;
}
You can check if array return false, like this
if(!arrayEqual(arr1,arr2)) {
// false
}
